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diff --git a/src/gleem/ManipPartLineSeg.java b/src/gleem/ManipPartLineSeg.java
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+++ b/src/gleem/ManipPartLineSeg.java
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+/*
+ * gleem -- OpenGL Extremely Easy-To-Use Manipulators.
+ * Copyright (C) 1998-2003 Kenneth B. Russell ([email protected])
+ *
+ * Copying, distribution and use of this software in source and binary
+ * forms, with or without modification, is permitted provided that the
+ * following conditions are met:
+ *
+ * Distributions of source code must reproduce the copyright notice,
+ * this list of conditions and the following disclaimer in the source
+ * code header files; and Distributions of binary code must reproduce
+ * the copyright notice, this list of conditions and the following
+ * disclaimer in the documentation, Read me file, license file and/or
+ * other materials provided with the software distribution.
+ *
+ * The names of Sun Microsystems, Inc. ("Sun") and/or the copyright
+ * holder may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS," WITHOUT A WARRANTY OF ANY
+ * KIND. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, NON-INTERFERENCE, ACCURACY OF
+ * INFORMATIONAL CONTENT OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. THE
+ * COPYRIGHT HOLDER, SUN AND SUN'S LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL THE
+ * COPYRIGHT HOLDER, SUN OR SUN'S LICENSORS BE LIABLE FOR ANY LOST
+ * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
+ * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
+ * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
+ * INABILITY TO USE THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGES. YOU ACKNOWLEDGE THAT THIS SOFTWARE IS NOT
+ * DESIGNED, LICENSED OR INTENDED FOR USE IN THE DESIGN, CONSTRUCTION,
+ * OPERATION OR MAINTENANCE OF ANY NUCLEAR FACILITY. THE COPYRIGHT
+ * HOLDER, SUN AND SUN'S LICENSORS DISCLAIM ANY EXPRESS OR IMPLIED
+ * WARRANTY OF FITNESS FOR SUCH USES.
+ */
+
+package gleem;
+
+import java.util.*;
+
+import gleem.linalg.*;
+import net.java.games.jogl.*;
+
+/** A line segment from (-1, 0, 0) to (1, 0, 0). */
+
+public class ManipPartLineSeg extends ManipPart {
+  private Vec3f color;
+  private Vec3f highlightColor;
+  private boolean highlighted;
+  private boolean visible;
+  private static Vec3f[] vertices = new Vec3f[] {
+    new Vec3f(-1, 0, 0),
+    new Vec3f(1, 0, 0)
+  };
+  /** Current transformation matrix */
+  private Mat4f xform;
+  /** Transformed vertices */
+  private Vec3f[] curVertices;
+
+  public ManipPartLineSeg() {
+    color          = new Vec3f(0.8f, 0.8f, 0.8f);
+    highlightColor = new Vec3f(0.8f, 0.8f, 0.2f);
+    highlighted    = false;
+    visible	   = true;
+    xform          = new Mat4f();
+    xform.makeIdent();
+    curVertices    = null;
+  }
+
+  /** Default color is (0.8, 0.8, 0.8) */
+  public void setColor(Vec3f color) {
+    this.color.set(color);
+  }
+
+  public Vec3f getColor() {
+    return new Vec3f(color);
+  }
+
+  /** Default highlight color is (0.8, 0.8, 0) */
+  public void setHighlightColor(Vec3f highlightColor) {
+    this.highlightColor.set(highlightColor);
+  }
+  
+  public Vec3f getHighlightColor() {
+    return new Vec3f(highlightColor);
+  }
+
+  public void intersectRay(Vec3f rayStart,
+			   Vec3f rayDirection,
+			   List results,
+			   Manip caller) {
+  }
+
+  public void setTransform(Mat4f xform) {
+    this.xform.set(xform);
+    recalcVertices();
+  }
+
+  public void highlight() {
+    highlighted = true;
+  }
+
+  public void clearHighlight() {
+    highlighted = false;
+  }
+
+  public void setPickable(boolean pickable) {
+  }
+
+  public boolean getPickable() {
+    return false;
+  }
+
+  /** Default is visible */
+  public void setVisible(boolean visible) {
+    this.visible = visible;
+  }
+
+  public boolean getVisible() {
+    return visible;
+  }
+
+  public void render(GL gl) {
+    if (!visible)
+      return;
+    // FIXME: probably too slow
+    boolean reenable = gl.glIsEnabled(GL.GL_LIGHTING);
+    gl.glDisable(GL.GL_LIGHTING);
+    gl.glBegin(GL.GL_LINES);
+    if (highlighted)
+      gl.glColor3f(highlightColor.x(), highlightColor.y(), highlightColor.z());
+    else
+      gl.glColor3f(color.x(), color.y(), color.z());
+    for (int i = 0; i < curVertices.length; i++) {
+      Vec3f v = curVertices[i];
+      gl.glVertex3f(v.x(), v.y(), v.z());
+    }
+    gl.glEnd();
+    if (reenable)
+      gl.glEnable(GL.GL_LIGHTING);
+  }
+
+  //----------------------------------------------------------------------
+  // Internals only below this point
+  //
+
+  private void recalcVertices() {
+    if ((curVertices == null) ||
+        (curVertices.length != vertices.length)) {
+      curVertices = new Vec3f[vertices.length];
+      for (int i = 0; i < vertices.length; i++) {
+        curVertices[i] = new Vec3f();
+      }
+    }
+
+    for (int i = 0; i < curVertices.length; i++) {
+      xform.xformPt(vertices[i], curVertices[i]);
+    }
+  }
+}